Attrition



, I .1, G. BRYANT ATTRITION MILL Filed March 22, 1926 lineare? 'Jwf 115.1929.

Uri-Trn- 'rr-ENT' 'OFF-ICB y unas e. BRYANT, or roar nUnQN, rincr'risen.-

A'lThe present invention relates attritionv :mills and particularly to mills for coarsend fine grinding or crushing such materialsas ear corn. i v Among the objects of'the invention is lan attrition mill unitcrusher and rinder which' may`be more economically pro uced and efii' the invention consists in the constructionand 1, of the base member.: '1 i arrangement indicated inthe accompanying drawings together with -any 'modi and variations thereof as may corrie within the scope of the hereunto appended claims.

In thc drawings:

Fig. 1V is a longitudinal .verticalzsectionthrough a mill embodying the invention.

Fig. 2 is a section cn' the line 2-2 ofFi .1. f Fig. 3 is an eind. view -froin Fig. 4 is a view Ysimilar to Fig: 2 of a modified forni. u As, shown, the .mill enr'ibodyi'n'g the referred form of the invention consists o'f a ase member 1Q acting as a cradle like vsupport for the 0f cations a hopper 11. The latter is provided'withf -lOngitndinal horizontal flanges 12 ada ted -to 'rest uponthe edges of base'l'Owhile the rounded hottoin of hopper 11 rests in the cut' .away part 13v ofthe base, the Wholeconstitut.-

ing the supporting frame for the other elements vof theinill: y

In the form 'shown in Fig. 4, the has-e410 is Mannion una..

. appiimion nien umn 22; i923. semi in. 98,504.

closure member 21. Tliedinner end ofhousl ing 17 is referably lclosed around the shaft by a suita lewall or diaphragm 22 to prevent passage of oil or materials being ground.

l vvall 16 (provided with two seats con'L centric awith an perpendicular to thc x` of the conical portion of the hopper. To the outer seat is securedthe housing 30 and to the Vinner seat is secured the ring shaped cutter 3l.

This housing 30 serves to house the cuttersA and provides -a supportfor the shaft bearing at this end of thevmacliine. The outer face is provided with an opening. 32vconcentric with the axis o f the hopper bottomand4 is faced around said opening to Seat a second bearin other end of shaft 19.v The' inner end of housing 33 :is closed'around the shaftl as at 35 and the outer Aend of the.l1ousingi s-pro videdwith a thrust'bearing 36 having means foiadjustinent'such as the screw 37a housing B2i-containingv bearing 34' for thsi Housing 30 is open at the bottom asatO' i to rvide foresca e of roundmaterials.

' 'Also mounted on shaft 19 is agriding disc l50. This may forni-a supporting end for the .breaking cono 45 'as shown and is provided oinittedand 4the flanges 12 extended owncoacts with ring l'fo'r'finely grinding or fwar'dly to form the supportingmembeis 12, producing'a onejpiece frame for the null. Y

catedoone whose' axis lis horizontal.' The ends 154 and "'16 of hopper 1.1'. are verti cal and provided withA circular openings 15?'-and '162 concentric-with .and erpendicular to the axi'sof the corneall ttoni.

' The Yend -15 is machined to provide aproper seat for a bearing'housing 17 in which is lo.

secured to it the drive pulley 20, the housing being closed around y,the shaft by aI suitable witha cutter ring labout the ei'iphery of the 'face 'ad-jacent the hopper w ich ringvl cutting 'the coarse material froinhop' 'er 11. The hopper member 11 is.provided"with 'substantially vertical-sides and its botto portion is formed as thoughpart of a trim-.

.--In operationgthe.couee serves bot' as a -Qcarse grihder'and as "a" feedfto 'the disc f grinder and botliinaybe adjusted-by mea-ns l ofthe screw 37. should be notedl that the seats for the.

bearing housing 1 8, the housing 30 and the Aof shaft 19, assembly of the several parantomatically takes car-cof. the alignment oiprts and parallelism -of the c'ntters. 'L v- By reason of the construction described in- 5v clnding the, adjustment, `thefievice is suitable 'frfifeduc'ing a variety of materialsin additiongtoftheear corn mentioned.

" l 'w having described the invention -and thepreerred forms of embodiment thereof is not to be limited to the-prcise details hereiu 'described-'and illustrated but 'only .isco fe ofthe claims which-follow."

the

portion having' `substantially vertical end -Walls, aligncd bearings supported uponsaid walls, a shaft snpportedfin said bearings; an attrition clenffent carried bysaid shaft and f10 T'it is tol be understood that the-saidinvention 1.1 Anfattri-tioirniill'consistin cfa iframe adaptedftoA cooperate with another attrition' clement iiiged to said rameportion and a 'separate'pedestal for 4supporting `said frame nger 'fr-ame axis of the shaft and' a separate pedestal for t 3.. An' attrition mili comprising a hopper; .portion, having around'ed bottom a'nd-'yerti` 'ical endwalls', a shaft passi'n through said Qnd'WallS, a bearing 'for sai .shaft carried.

byone of said wa1ls, ahousing carried bythe .a second 'bearingifor the shaft, the bearings bein-gl in alignment andA concentric With said rounded bottoni, attrition elements within 45 said hopper 'and other attrition elements f within said'h'ousing but outside of said hop- 'p 4. Ali attritioninillcomprsing a hopper haring vertical end gvalls, a crushing element- 50 withinf saidhpp'er", a grinding ele-ment carriedon the; outside o .-.o'ne of said endk walls,

c sliafttraversing said hopper, said shaftf carrying a 4breakxngone withinsaid hopper and a grln'ding eleinentoutslde ot' said hop: ,55

per but' adaptedto cooperate witlrthefirst grinding' element, aligned bearin'gsiforsaid shaft supported by said hopper and.. a" sep'a-; rate supportingelenientfor said hopper ,and \parts carried thereby.'- Y 6.0

5. A n attr'ition niilLcomprising a frame member also 'constituting a-hopper;l vertical .1 end walls therefor havinfrparallelysea-ts ma- 'i chined on their outer sur aces, circular open#- ings in said end xvalls concentric With'- said-165 v Smits, a bearlnghousing secured to the 's eat on onc-y end, anl attrition element secured tovone 'f 'of the seats on tlieother end,'a housing seated 'on another .ofsa1dseats on the latter end;

said housing having :1n-opening inalignment .70.

with the openingsin said frame' member andf 'also having machined- -on its v outer aceai# nt palvallelqvitli-the otherseatsfnbearing' Ahousir'ig s ecured'to thelast mentioned;seat;`

.2l-shaft Carrying an attrition element, adapt-- 7,5j` ed to coactwith the aboveslnentioned element, mounted bearings in said'housingsjand'a vsupporting meniber'orsaidframe meinber.- 

